CN107179227A - A kind of triaxial test sample preparation device - Google Patents
A kind of triaxial test sample preparation device Download PDFInfo
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- CN107179227A CN107179227A CN201710499886.2A CN201710499886A CN107179227A CN 107179227 A CN107179227 A CN 107179227A CN 201710499886 A CN201710499886 A CN 201710499886A CN 107179227 A CN107179227 A CN 107179227A
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- film cylinder
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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Abstract
The present invention relates to a kind of triaxial test sample preparation device, including by two in semi-cylindrical shells be spliced hold film cylinder and be set in hold film cylinder at the top of the collar, the inwall absorption latex film for holding film cylinder, and the inwall for holding film cylinder sequentially forms permeable stone cistern, sample groove, seal groove and bottom tub from top to bottom.Compared with prior art, the present invention is mainly lucite material, light, firm, transparent, attractive in appearance；It is designed, is used so as to perfect cooperation instrument according to instrument and soil sample standard size；The relative position for holding film cylinder is fixed by pin, good stability is made it have, is conducive to hitting reality；By being used in combination with vavuum pump, make latex film and fitting for barrel even closer, the size of sample can be precisely controlled；After experiment filling is finished, two halves are lightly held film cylinder by bolt and separated by the device, it is to avoid disturbance of the manual operation to soil sample, it is ensured that the uniformity of soil sample.
Description
Technical field
The present invention relates to building experimental technique field, and in particular to a kind of triaxial test sample preparation device.
Background technology
For the laboratory soil tests such as the triaxial test of sand, dynamic triaxial tests, resonant column test, the quality of sample
It is that experiment success, the whether believable key of test data, therefore exploitation are particularly important once the sample preparation device packaged.
For triaxial test, filter paper and permeable stone are first placed on base top, the lower end of latex film is then set in base
On, then sand sample is seated in film cylinder.It is higher to the diametric requirements of sample during test, it is ensured that entirely sample is in
Cylinder.But, latex film is very thin, and with certain elasticity, it is difficult to ensure that obtained sample is in cylinder.Then, occur
Sand sample prepares film wound packages and put.
Conventional sand sample prepares film wound packages and is set to a kind of component of metal material at present, and the device has the following disadvantages：1.
Construction is excessively simple, causes entirety to be not sufficiently stable, have impact on and hit real effect；2. film cylinder side wall is without getter device so that latex
Film can not closely fit in side wall, cause obtained soil sample diametrically to differ down；3. reality is being loaded and hit in top without casing
During sand sample, the loss of sand is easily caused；4. mould cylinder is metal material, opaque, it is impossible to the effect of Real Time Observation filling.
The content of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of stability is good, sample preparation
Uniformly, soil sample height and the triaxial test sample preparation device of diameter can accurately be controlled.
The purpose of the present invention can be achieved through the following technical solutions：A kind of triaxial test sample preparation device, sample preparation dress
Put including by two in semi-cylindrical shells be spliced hold film cylinder and be set in hold film cylinder at the top of the collar, it is described to hold film
The inwall absorption latex film of cylinder, and the inwall for holding film cylinder sequentially forms permeable stone cistern, sample groove, seal groove from top to bottom
And bottom tub, during sample preparation, the lower end of latex film is set in the top of base, sealing ring is then set in chassis outer side, so
Two semi-cylindrical shells are merged afterwards, base, sealing ring is embedded in respectively in bottom tub and seal groove, then by latex film
It is attached on the inwall for holding film cylinder, then loads permeable stone, sand, permeable stone successively in latex film.
The side wall of one of them semi-cylindrical shells is provided with a through hole, when two semi-cylindrical shells are merged into
Hold after film cylinder, the through hole connects vavuum pump.By way of pumping, latex film is attached to completely on the inwall for holding film cylinder, from
And causing latex film in cylinder, final sample is also in cylinder.
A plurality of horizontal straight trough is opened up in the middle part of the semi-cylindrical shells, one end of the horizontal straight trough is located at vertical side
Bian Shang, when two semi-cylindrical shells merge to be formed hold film cylinder when, two of sustained height in two semi-cylindrical shells
Horizontal straight trough linearly, and inserts bearing pin in horizontal straight trough.By bearing pin, two semi-cylindrical shells can be connected to one
Rise, will not be separated when permeable stone and sand are put in sample preparation.
It is preferred that, quantity >=2 of the horizontal straight trough.
It is described that a plurality of horizontal screw thread groove, one end position of the horizontal screw thread groove are opened up in the middle part of the semi-cylindrical shells
In on vertical side, the other end of the horizontal screw thread groove is located on curved wall, and bolt is set inside the horizontal screw thread groove,
The top of the bolt is flushed with the vertical side of semi-cylindrical shells, and film cylinder is held when two semi-cylindrical shells merge to be formed
When, two horizontal screw thread grooves of sustained height are linear in two semi-cylindrical shells, and supported at the top of two bolts
Connect.After the completion of sample preparation, it will entirely hold film cylinder and taken away on the outside of latex film, leave behind the sand inside latex film and latex film
Soil sample, existing device is acted when taking away and holding film cylinder and is difficult to control, and the shape of sample cylinder can be destroyed, so that shadow
Ring test result.And it is of the invention by setting horizontal screw thread groove and bolt, when needing to separate two semicircular shells, only
Need gently to turn the bolt of one end, be allowed to toward sinciput, due to two water of the sustained height in two semi-cylindrical shells
Flat thread groove linearly, and is abutted at the top of two bolts, so a bolt is toward sinciput, so as to drive another semicolumn
Shape housing shrinks back, and disturbs very little during retrogressing, will not destroy sample.Until bearing pin takes off from a horizontal straight trough
From illustrating that two semi-cylindrical shells have been kept completely separate, now take semi-cylindrical shells away again, sample would not be destroyed.
It is preferred that, the quantity of the horizontal screw thread groove is >=2.
The diameter for holding permeable stone cistern in film cylinder is slightly larger than the diameter of sample groove.So, permeable stone cistern and sample groove it
Between form a small ladder, when sand loading is native, when the height of sand is located just at the ladder, indicate that sand
Filling is completed, and is then put into permeable stone on sand top.
The material for holding film cylinder is lucite, is easy to Real Time Observation to load effect.
Compared with prior art, beneficial effects of the present invention are embodied in following several respects：
(1) by setting horizontal straight trough and bearing pin so that hold film cylinder stabilization, hit actual effect fruit good；
(2) by setting horizontal screw thread groove and bolt so that semi-cylindrical shells disturbance in separation is smaller, will not destroy
The shape of sample；
(3) latex film is extracted by vavuum pump and holds the air between film cylinder inwall so that latex film, which is close to, holds film cylinder
Inwall, makes final sample in cylinder；
(4) film cylinder is held using lucite material, is easy to Real Time Observation to load effect.
Brief description of the drawings
Fig. 1 is the schematic top plan view of structure of the present invention；
Fig. 2 is I-I profile in Fig. 1；
Fig. 3 is II-II profile in Fig. 1；
The cross sectional plan view that Fig. 4 is a-a in Fig. 2.
Wherein, 1 is horizontal straight trough, and 2 be through hole, and 3 be horizontal screw thread groove, and 4 be permeable stone cistern, and 5 be sample groove, and 6 be sealing
Ring recess, 7 be sealing ring, and 8 be base, and 9 be bottom tub, and 10 be the collar, and 11 be bearing pin, and 12 be bolt.
Embodiment
Embodiments of the invention are elaborated below, the present embodiment is carried out lower premised on technical solution of the present invention
Implement, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following implementations
Example.
Embodiment 1
A kind of triaxial test sample preparation device, as shown in Figure 1 to 4, it is in semicircle that the sample preparation device is included by two to its structure
What cylindrical shell was spliced hold film cylinder and being set in holds the collar 10 at the top of film cylinder, holds the inwall absorption latex film of film cylinder,
And hold film cylinder inwall sequentially form permeable stone cistern 4, sample groove 5, seal groove 6 and bottom tub 9 from top to bottom.
The side wall of one of semi-cylindrical shells is held provided with a through hole 2 when two semi-cylindrical shells are merged into
After film cylinder, the connection vavuum pump of through hole 2.By way of pumping, latex film is attached to completely on the inwall for holding film cylinder, so that
Latex film is in cylinder, and final sample is also in cylinder.
2 horizontal straight troughs 1 are opened up in the middle part of semi-cylindrical shells, one end of horizontal straight trough 1 is located on vertical side, when
Two semi-cylindrical shells merge to be formed hold film cylinder when, two horizontal straight troughs of sustained height in two semi-cylindrical shells
1 linearly, and the insertion bearing pin 11 in horizontal straight trough 1.By bearing pin 11, two semi-cylindrical shells can be connected to one
Rise, will not be separated when permeable stone and sand are put in sample preparation.
2 horizontal screw thread grooves 3 are opened up in the middle part of semi-cylindrical shells, one end of horizontal screw thread groove 3 is located at vertical side
On, the other end of horizontal screw thread groove 3 is located on curved wall, and the inside of horizontal screw thread groove 3 sets bolt 12, the top of bolt 12 with
The vertical side of semi-cylindrical shells is flushed, when two semi-cylindrical shells merge to be formed hold film cylinder when, positioned at two semicolumns
Two horizontal screw thread grooves 3 of sustained height are linear on shape housing, and abutted at the top of two bolts 12.When sample preparation is completed
Afterwards, it will entirely hold film cylinder to take away on the outside of latex film, leave behind the sand sample inside latex film and latex film, it is existing
Device take away hold film cylinder when vibrate it is larger, can destroy sample cylinder shape, so as to influence test result.And this hair
It is bright by setting horizontal screw thread groove 3 and bolt 12, when need separate two semicircular shells when, it is only necessary to gently turn one
The bolt 12 at end, is allowed to toward sinciput, because two horizontal screw thread grooves 3 of the sustained height in two semi-cylindrical shells are in straight
Line, and abutted at the top of two bolts 12, so a bolt 12 is toward sinciput, another bolt 12 can be caused slow backward
Move back, so as to drive another semi-cylindrical shells to shrink back, and very little is disturbed during retrogressing, sample will not be destroyed.Until
Bearing pin 11 departs from from a horizontal straight trough 1, illustrates that two semi-cylindrical shells have been kept completely separate, now takes semi-cylindrical away again
Housing, would not destroy sample.
The diameter for holding permeable stone cistern 4 in film cylinder is slightly larger than the diameter of sample groove 5.So, permeable stone cistern 4 and sample groove 5 it
Between form a small ladder, when sand loading is native, when the height of sand is located just at the ladder, indicate that sand
Filling is finished, and is then put into permeable stone on sand top.
The material for holding film cylinder is lucite, is easy to Real Time Observation to load effect.
When in use, filter paper and permeable stone are placed first on instrument base, and puts latex film, then with O-shaped sealing
The outer end of base is enclosed to prevent leak-stopping water, and sealing ring to be located on the outside of latex film；Then by two split semi-cylindrical shells
Fit in base to put well, and two semi-cylindrical shells formation are fixed by bearing pin and hold film cylinder；Then holding film cylinder outer sheath
Upper hoop is simultaneously tightened, and two halves are held into film cylinder closely together in together；Then by latex film toward turning up, the upper edge for holding film cylinder is entangled,
And cover the collar；Vavuum pump is connected by passage and held so that latex film is adsorbed on film cylinder inwall, sample then can be filled；It is to be installed
After the completion of sample, turn off vavuum pump, remove the collar, latex film is up turned over and entangles triaxial apparatus top cap and uses O-ring banding, anti-leak-stopping
Water；Then DNA releaxed circular DNA hoop, bolt is slowly twisted with screwdriver inward, and two halves gently are held into film cylinder by the Contact reaction-force of the bolt on both sides
Separate, remove and hold film cylinder, then carry out next step experiment.
Claims (8)
1. a kind of triaxial test sample preparation device, it is characterised in that the sample preparation device includes in semi-cylindrical shells being spliced by two
The film cylinder and being set in of holding hold the collar at the top of film cylinder, it is described to hold the inwall absorption latex film of film cylinder, and described hold film
The inwall of cylinder sequentially forms permeable stone cistern, sample groove, seal groove and bottom tub from top to bottom, during sample preparation, by under latex film
End is set in the top of base, and sealing ring then is set in into chassis outer side, then merges two semi-cylindrical shells, makes bottom
Seat, sealing ring are embedded in bottom tub and seal groove respectively, are then attached to latex film on the inwall for holding film cylinder, then in latex
Permeable stone, sand, permeable stone are loaded in film successively.
2. a kind of triaxial test sample preparation device according to claim 1, it is characterised in that one of them described semi-cylindrical
The side wall of housing is provided with a through hole, and after two semi-cylindrical shells, which are merged into, holds film cylinder, the through hole connects vavuum pump.
3. a kind of triaxial test sample preparation device according to claim 1, it is characterised in that close to the semi-cylindrical shells
Middle part opens up a plurality of horizontal straight trough, and one end of the horizontal straight trough is located on vertical side, when two semi-cylindrical shells merge
When film cylinder is held in formation, two horizontal straight troughs of sustained height are linear in two semi-cylindrical shells, and in horizontal straight trough
Middle insertion bearing pin.
4. a kind of triaxial test sample preparation device according to claim 3, it is characterised in that the quantity of the horizontal straight trough >=
2。
5. a kind of triaxial test sample preparation device according to claim 3, it is characterised in that described close to the semi-cylindrical
Housing central section opens up a plurality of horizontal screw thread groove, and one end of the horizontal screw thread groove is located on vertical side, the horizontal screw thread groove
The other end be located on curved wall, bolt, top and the semi-cylindrical shell of the bolt are set inside the horizontal screw thread groove
The vertical side of body is flushed, when two semi-cylindrical shells merge to be formed hold film cylinder when, it is same in two semi-cylindrical shells
Two horizontal screw thread grooves of one height linearly, and are abutted at the top of two bolts.
6. a kind of triaxial test sample preparation device according to claim 5, it is characterised in that the quantity of the horizontal screw thread groove
For >=2.
7. a kind of triaxial test sample preparation device according to claim 1, it is characterised in that described to hold permeable stone cistern in film cylinder
Diameter be slightly larger than sample groove diameter.
8. according to a kind of any described triaxial test sample preparation device of claim 1~7, it is characterised in that the film cylinder that holds
Material is lucite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710499886.2A CN107179227A (en) | 2017-06-27 | 2017-06-27 | A kind of triaxial test sample preparation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710499886.2A CN107179227A (en) | 2017-06-27 | 2017-06-27 | A kind of triaxial test sample preparation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107179227A true CN107179227A (en) | 2017-09-19 |
Family
ID=59845389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710499886.2A Pending CN107179227A (en) | 2017-06-27 | 2017-06-27 | A kind of triaxial test sample preparation device |
Country Status (1)
| Country | Link |
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| CN (1) | CN107179227A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296875A (en) * | 2019-07-10 | 2019-10-01 | 中交第二公路勘察设计研究院有限公司 | It is a kind of to hit real sample cylinder and operating method for subgrade soils wetting-drying test |
| CN114397155A (en) * | 2021-12-16 | 2022-04-26 | 中交天津港湾工程研究院有限公司 | Preparation method of unsaturated triaxial sample without cohesive soil |
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| CN101660984A (en) * | 2009-09-27 | 2010-03-03 | 上海大学 | Sample preparation apparatus of sandy clay triaxial test |
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2017
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Patent Citations (6)
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| CN103837385A (en) * | 2014-02-28 | 2014-06-04 | 河海大学 | Coarse-grained soil polymer slip casting triaxial test sample kit and using method thereof |
| CN104316380A (en) * | 2014-11-11 | 2015-01-28 | 武汉市市政建设集团有限公司 | Sample preparation device for coarse-grained soil triaxial test and application method thereof |
| CN104374624A (en) * | 2014-11-19 | 2015-02-25 | 北京工业大学 | Geotechnical triaxial test sample preparation split round mold and sample preparation method |
| CN105181416A (en) * | 2015-10-12 | 2015-12-23 | 北京工业大学 | High-visualization geotechnical triaxial test sample device and manufacturing method |
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| 《化工百科全书》编辑委员会: "《化工百科全书》", 31 December 1996 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296875A (en) * | 2019-07-10 | 2019-10-01 | 中交第二公路勘察设计研究院有限公司 | It is a kind of to hit real sample cylinder and operating method for subgrade soils wetting-drying test |
| CN110296875B (en) * | 2019-07-10 | 2024-04-16 | 中交第二公路勘察设计研究院有限公司 | Compaction sample cylinder for dry and wet cycle test of roadbed soil and operation method |
| CN114397155A (en) * | 2021-12-16 | 2022-04-26 | 中交天津港湾工程研究院有限公司 | Preparation method of unsaturated triaxial sample without cohesive soil |
| CN114397155B (en) * | 2021-12-16 | 2023-10-27 | 中交天津港湾工程研究院有限公司 | Preparation method of non-clay unsaturated triaxial sample |
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Application publication date: 20170919 |